US1409094A

US1409094A - Lock

Info

Publication number: US1409094A
Application number: US442332A
Authority: US
Inventors: Greenison Burt
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-02-03
Filing date: 1921-02-03
Publication date: 1922-03-07
Anticipated expiration: 1939-03-07

Description

B, GREENISVONV.

LOCK.

APPLICATION FiLED FEB, 3, 1921. 1,409,094. Patented Mar- 7,1922. I .1. x. I I 7 /y 2 wk 59 6 i1 X\\\\\ Em 4 g 2 WITNESSES IMVENTOR v 5 GREEN/SON ,4 TTOR/VEYS UNITED. STATES BURT GREENISON', OF NEW YORK, N. Y.

' LOCK.

, Application filed February 3, 1921.

To all whom it may concern.-

Be it known that I, BURT-GREENISON, a citizen of the United States, and resident of the city of New York,'borough of Manhattan, in the county and State of New York, have invented a new and Improved Look, of which the following is a full,'clear, and exact description.

My invention relates to locks, and aims to provide certain improvements in connection with the same. v

It is a well appreciated fact that it has been customary to provide a lock mechanism serving to retract and project a bolt, such lock mechanism being associated with'o'ne face of the closure to be locked. It has also been customary upon the other face, to provide a knob permitting of a' manual retrac tion of the bolt without the necessity of utilizing a key.

These locks, While serving to a certain ex tent to prevent the opening of the closure by an unauthorized person, have nevertheless failed, in that any person" familiar with the operation of the lock would have too lit; tle' difliculty in forcing the same. In some instances, it has not even been necessary to resort to this action, as a skeleton or duplicate key would permit of a ready opening of the closure with which the lock is associated.

Having these and other defects to reduce the risk of an unauthorized person opening the closure, to a minimum.

This is to be predicated to the fact that my invention aims to'provide means serving to effectually prevent a retraction of the bolt by means of even a skeleton or duplicate key, and renders the same solely inaccessible aside from the fact that it holds the bolt against motion, and that the bolt is incapable of being forced to its retracted position.

Still another object of my invention-is the provision of a lock of the character stated, in which a special form of key will be necessary to effect an operation of the bolt, the appearance of this look in no way difi'erem tiating from that of a conventional lock, so that an unauthorized person would be led to believes that a conventional skeleton or master key would be capable of effecting an opening of the closure.

Further objects of my invention will appear in the annexed specificationand draw- Speciflcation of Letters Patent.

to a slightly different he incapable of being in mind, I have constructed a look by means of which primarily, the structure provided, will serve to further prevent any lffat'ented Mar. 7, 1922. Serial No. 442,332.

ings which latter present one practical embodiment of my invention, and in which Figure 1 is a sectional side view of a lock tconstructed in accordance with my inven- Figure 2 isa-sectional view taken along the line 2-2 of Figure 1.

Flgure 3 is a sectional view taken along the line 33 of Figure 1. 1

Figure 4 is a' face view of the rear of the closure with which my improved lock-is associated.

Figures 5 and 6 are perspective views, of certain of the essential elements forming a part of my invention, and) Figure 7 illustrates my inventionapplied form of lock. Referrin ure 3, it Wlll be seen that the reference numeral 10 indicates the jamb with which the closure 11 co-operates in'the usual manner. Contrary to the conventional construc-. tion, it ,will be noted that the keeper 12, does not provide an opening, but furnishes a socket'13, for the reception of the bolt 14, such socket being preferably of the same material as thekeeper 12, and also conveniently forming an integral portion of the same.

Thus it will beobvious that a jimmy would forced between the closure, 11 and jamb 10 for the purpose of engaging the rear end of the bolt 14.- to effect a retraction of the same, but aside from this safe-guard, I provide structure serving retraction of the bolt now-m0re particularly to Fig- 14 by an extraneous member, this structure being hereinafter more fully specified.

Referrin now nore particularly to Figure '1, it Wlll be seen that the reference numeral 15 indicates a lock of any desired construction applied in the usual manner to the closure 11, and serving to permit of an authorized operation of the bolt 14. This lock, in the usual manner co-operates with a spindle 16 extending through the entire body of theclosure 11, and having a knob 17 secured to its outer end, which knob will permit of a rotation of the spindle 16 without the necessity of utilizing a key.

In connection with the

elements

14 and 16,

opening being formed with a series of teeth- 19 or other suitable elements co-operating with the teeth 20 of thespindle'16. Thus it will be noted, that a firm inter-engagement of the spindle and bolt is permitted, and that master'key, to efiect an opening of the closure 11, it will be noted, reference beinghad to Figures 1 and 2, that a plate 21 is firmly fixed to the closure 11, as at 22 and" encircles the spindle 16. This plate provides, a notch or opening 23 directly underlying the knob 17, and'it will be noted that a spring pressed plunger 24 is associated with the knob and arranged within the body of the same at a oint at which it will be capable of moving into the depression 23 when thebolt- 14 is in fully projected position.'

It will thus be seen that when the plunger is in the position indicated in dotted lines in Figure 1, that even a person provided 'with a key capable of efiecting an operation of the spindle 16, will be unable to effect a rotation of the spindle 16, and to provide means serving to permit of an operation of the plunger 24 only when it is desired, it'will be'noted that I preferably provide an operating handle25 aflixed to the outer end of the same, such operating handle being capable of being turned and being adapted to rest in one'of two slots, 26 or 27. It is to be noted that the base of these slots or grooves lie in different planes, the said grooves being arranged at an angle with respect to each other. Thus upon the handle 25 lying in the slot 27, it will be seenthat the plunger 24 will be held in its retracted position, but that a person may lift and rotate the handle 25 and permit the same to move into the groove 26, which being of greater depth allows the outer end of the plunger to move to the position indicated in dotted lines, thus efi'ectually preventing any movement of the spindle 16 by any person without the plunger 24 being again retracted. a

Referring now more particularly to the structure illustrated in Figure 7, it will he seen that the same includes the bolt'14, pro.- vidi'ng teeth 19, and co-operating with a spindle .28, it being noted that the key slot 28 of the spindle 28 extends throughout the entire length 'ofthe same, and that contrary to the utilization of the knob 17, a lock 30 is arranged at this point, which look is a duplicate of the lock 15.

Thus it will'be'noted that the lock, constructed in accordance with'this latter embodiment of myinvention will provide the identical appearance osfthe customary look, but in the event. that 'a master or skeleton keyis utilized, it will be appreciated that any retraction of the bolt 14 will be precluded, in that it will be necessary to utilize a key extending throughout the entire length of the door 29, and arranged with elements corresponding to the elements. of the locks .15 and 30, with WhlCh it is to co operate.

Front the foregoing it will be seen that I have constructed a lock, which will, as

nearly; as possible, preclude an unauthorized person from manipulating the same, in I that it will be virtually impossible to'manipulate theb olt by askelton ormaster key, aside from the fact that the bolt is arranged in. such a manner as to be inaccessible to the use of a jimmy, it being also noted that even if the same element should tend to effect a retraction of the bolt 14 this will be pre cluded in that it will be impossible to return the spindle 16, thus virtually holding the bolt against movement.

It will furtherbe apprec ated that numerous modifications of structure may readily be resorted to within the scope of my claims: l. A look, including a bolt, a spindle oooperating with said bolt for effecting a movement of the same, said spindle extendingtransversely of said bolt and beyond the side edges thereof, a lock secured to one end ofsaid spindle, aknob secured to the opposite end of thesame, said knob being formed with grooves extending at angles to. each other, and being of different depths, a spring pressedplunger secured to said knob, aplate encircling said spindle, a head secured to said plunger, said head being adapted to seat in either of said grooves and when lying in the deeper of the same extending into an opening forming apart of said plate.

2. A lock including a bolt having an opening presenting a toothed portion, a spindle, an annular series of teeth forming a part of said spindle. said latter teeth being adapted to coact with said first-mentioned teeth, and a lock forming a part of said spindle.

BURT GREENISON.